------- Additional Comments From jakub at gcc dot gnu dot org 2005-02-22 17:03 ------- That's not a problem. The SUBREG is SUBREG_PROMOTED_VAR_P and SUBREG_PROMOTED_UNSIGNED_P, which is a promise that the upper 32 bits are all 0.
The problem is that when using the K&R style function definition, there is no prototype for the function and so the caller expects int exact_log2_wide (int); while the callee is actually int exact_log2_wide (unsigned int); It looks like int is passed sign extended and unsigned int zero extended, so the functions disagree about what the upper 32 bits of the argument should contain. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20134
